Section 520.530 - Cythioate oral liquid(a)Specifications. Each milliliter contains 15 milligrams of cythioate.(b)Sponsor. See Nos. 054771 and 058198 in § 510.600 of this chapter.(c)Conditions of use - (1)Amount. 15 milligrams cythioate per 10 pounds of body weight every third day or twice a week.(2)Indications for use. Dogs, for control of fleas.(3)Limitations. Federal law restricts this drug to use by or on the order of a licensed veterinarian.49 FR 5614, Feb. 14, 1984, as amended at 67 FR 78355 , Dec. 24, 2002; 79 FR 28819 , May 20, 2014; 86 FR 14818 , Mar. 19, 2021; 87 FR 58961 , Sept. 29, 2022 86 FR 14818, 3/19/2021; 87 FR 58961, 9/29/2022